diff --git a/.env.sample b/.env.sample
index 4f01c63..9c08b70 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,2 +1,3 @@
 VITE_KAKAO_MAP_API_KEY=
-VITE_API_BASE_URL=
\ No newline at end of file
+VITE_API_BASE_URL=
+VITE_API_KEY=
\ No newline at end of file
diff --git a/src/lib/api.ts b/src/lib/api.ts
index e113074..92d020d 100644
--- a/src/lib/api.ts
+++ b/src/lib/api.ts
@@ -4,6 +4,9 @@ const apiClient = ky.create({
     prefixUrl: import.meta.env.VITE_API_BASE_URL || "",
     timeout: 10000,
     credentials: "include",
+    headers: {
+        ...(import.meta.env.VITE_API_KEY ? { "x-api-key": import.meta.env.VITE_API_KEY } : {}),
+    },
 });
 
 export const apiGet = async <T, P = undefined>(